Wire-stretcher



(No Model.) A

WpD. AMIS,

` WIRE STRETGHER.

PatentedMar. 4,1884t s n *I a WITNESS/3S v I INVEJVTOR 6&4. 1 IMilner/Tn l). ATTQLS.

@www u UNITED STATES PATENT OEEICE.

wILBoIIEN DAVIS AMIS, oE EAEEAGUT, Io'wA.

WIRE-STRETCHEI-'L` SPECIFICATION formingpart of Letters Patent No.294,716, dated March 41884.

Application led October 31, 1883. (No model.)

To @ZZ whom, it may concern.-

Be it known that I, WILBOIIEN DAVIS AMIS, a citizen o'f the UnitedStates, residing at Farragut, in the county of Fremont and State ofIowa, have invented certain new and useful Improvements inTire-Stretchers; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, andto letters orfigures of reference marked thereon, which form a part. of thisspeciiication.

Figure l is a perspective view illustrating my invention applied to abarbed wire, showing the wire strained and wrench applied. Fig. 2 is afront view, showing Iny tightening device applied to the wire betweenposts and locked. Fig. 3 is a perspective of the device, looking at itfrom its slotted end. Fig.'4 is a view of the tightening device,partially in section, with the key in position as in use. Fig. 5 is adetail of the locking-pin.

My object is to produce a portable device which is adapted to tightenbarbed or other wiresfor fence-guards, and which will remain on the wireor wires of the fence to admit of the same beingtightened whennecessary; and my invention consists in a grooved pulley having 'awrench nut on one end, adapted to receive a movablehand-wrench, andhaving a diametri cal groove extendingpartially through it, and alsoopen slots in the periphery of the anges. Alsoiu means, hereinafterexplained, for locking the pulley and holding the wire taut when it (thepulley) has been turned so that the wire is at a proper tension.

These features, together with others which I shall hereinafter'explain,will be fully un derstood when taken in oonuection with the annexeddrawings.

A A designate the posts of a wire fence, and B B the fence-wires, whichmay be barbed or not for the purpose of my invention. e

In order to tighten the wires, I employ a pulley, C, for each one of thewires. On the end of each pulley is a prismatic head or stem, c. lIhepulley is transversely slotted at c, and its circular iianges e e are4notched at suitable intervals, f f f, the notches beingv oblique andterminating interiorly in eyes f', said notches affording passages forthe locking pin E, for the purpose of adjusting this pin in the saideyes. It will be seen that the eye is made larger in diameter than thetransverse diameter of the locking-pin; consequently I leave a shoulderat f2, which will prevent the pin E from disengagement from the deviceduring the process of tightening awire. The groove c in this pulley isterminated at or near the middle ot' the length of said pulley by aneye, c2. rlhis grooved pulley C is cast entire, and it is preferablymade' of malleable iron. I use, in combination with this grooved pulley,a key orpin, E, which is adapted to enter any one of the eyes f of theoblique notches f.

The operation of nlyinvention isas follows: The pulley C is applied to afence-wire by adjusting the pulley on a wire anywhere betweenposts,letting the wire into the diametrical slot c. The wrench D is nowapplied on the prismatic portion, andthe pulley is turned until the wireis wrapped about the groove d of the pulley a sufficient number of timesto obtain the required tension. The pin E is then inserted through theoblique grooves into the eyes f and when the strain is'put on the wirethe pin E will be brought homev against the shoulders f2, andv will besafely locked. It will thus bc seen that this pin forms a stay or lockto prevent the pulley from turning backward. The wrench is of courseremoved after the pin is inserted and the device is left on the wire. Atany time when the wire sags, by using the wrench the wire can betightened.

/Vhile I have shown this as applied to wire fence, it is obvious that itis vapplicable to tightening ropes or cables for any purpose.

I am aware that it is not new to construct an annularly-grooved wheelwith a transverse groove in it, and with perforated flanges to receive alocking-pin; and I make no broad claim to such device.

Having described my invention, what I claim as new, and desire tosecure, by Letters Patent,

The wire-stretcher having a transverse slot and oblique groovesin itsilanges, terminating in' eyes f', and shouldered at f2, adapted toreceive a locking pin, substantially as described.

In testimony whereof I affiX my signature in presence of two witnesses.

VILBOURN DAVIS AMIS.

IOO

